“I built my passive solar straw bale house with earthen plasters in 2000 for $50K (will most likely cost more today, depending on many factors). This is an overview of the house; it is extremely energy-efficient. My electric bills are about $40 per month.
energy efficient
Eatmore Sprouts Earthbag Greenhouse
“In the spring of 2011, the construction of our new greenhouse began. This is not just a regular greenhouse. In an effort to maximise thermal mass, it is being built with environmental sustainability in mind by using earth.
Low Energy Buildings
Ashden.org is one of my all time favorite sites. You can spend days researching their extensive website for award winning designs. This is top quality information, folks.
“Low energy buildings use passive techniques, such as optimal solar gain, and advanced active systems, such as mechanical ventilation with heat recovery, to create comfortable internal environments that have low energy demand and associated greenhouse gas emissions. Some low energy buildings use renewable energy generation to further reduce or eliminate their greenhouse gas emissions in use.
– Buildings account for about 45% of UK CO2 emissions.
– Good design can cut CO2 and energy bills by nearly two thirds.
– Incorporating renewable energy as well can give buildings that produce no net CO2 in use.
Cool Roofs
“Cool roofs are the roofs that can deliver high solar reflectance (the ability to reflect the visible, infrared and ultraviolet wavelengths of the sun, reducing heat transfer to the building) and high thermal emittance (the ability to radiate absorbed, or non-reflected solar energy). The benefits associated with cool roofs include reduced cooling energy load, reduced air pollution and greenhouse gas emission, and improved human health and comfort. Cool roofs may extend the roof service life and help mitigating the urban heat island effect.
Additional Passive Cooling Strategies for Hot Climates
The following list includes dozens of low tech, low cost ways to cool buildings in hot climates passively without electricity or machinery, i.e., passive cooling or natural cooling. This list is in addition to the 11 or so simple passive cooling techniques that I talked about in my video the other day. Altogether there are over 50 practical methods for cooling your home sustainably.
Energy Efficient Chest Fridge
I saw this fridge a few years ago on Build it Solar.com. It’s a great site like I keep saying with hundreds of practical projects. Several years later and now I’m asking the same questions as the author below. Why haven’t more people made the switch to this super energy efficient fridge? “Using vertical doors … Read more